diff --git a/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_11/BukkitQueue_1_11.java b/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_11/BukkitQueue_1_11.java
index 4771c92b..85a58946 100644
--- a/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_11/BukkitQueue_1_11.java
+++ b/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_11/BukkitQueue_1_11.java
@@ -24,7 +24,6 @@ import java.util.Collections;
 import java.util.Map;
 import java.util.Set;
 import java.util.UUID;
-import java.util.concurrent.ExecutorCompletionService;
 import net.minecraft.server.v1_11_R1.BiomeBase;
 import net.minecraft.server.v1_11_R1.BiomeCache;
 import net.minecraft.server.v1_11_R1.Block;
diff --git a/core/src/main/java/com/boydti/fawe/object/FaweQueue.java b/core/src/main/java/com/boydti/fawe/object/FaweQueue.java
index 6a4b83c2..9d841409 100644
--- a/core/src/main/java/com/boydti/fawe/object/FaweQueue.java
+++ b/core/src/main/java/com/boydti/fawe/object/FaweQueue.java
@@ -28,7 +28,6 @@ import java.util.HashSet;
 import java.util.Set;
 import java.util.UUID;
 import java.util.concurrent.ConcurrentLinkedDeque;
-import java.util.concurrent.ExecutorCompletionService;
 import javax.annotation.Nullable;
 
 public abstract class FaweQueue implements HasFaweQueue {
@@ -312,7 +311,6 @@ public abstract class FaweQueue implements HasFaweQueue {
     @Deprecated
     public boolean next() {
         int amount = Settings.IMP.QUEUE.PARALLEL_THREADS;
-        ExecutorCompletionService service = SetQueue.IMP.getCompleterService();
         long time = 20; // 30ms
         return next(amount, time);
     }
diff --git a/core/src/main/java/com/boydti/fawe/object/extent/FastWorldEditExtent.java b/core/src/main/java/com/boydti/fawe/object/extent/FastWorldEditExtent.java
index 2cd5ea2e..0024fb1b 100644
--- a/core/src/main/java/com/boydti/fawe/object/extent/FastWorldEditExtent.java
+++ b/core/src/main/java/com/boydti/fawe/object/extent/FastWorldEditExtent.java
@@ -10,6 +10,7 @@ import com.sk89q.jnbt.DoubleTag;
 import com.sk89q.jnbt.ListTag;
 import com.sk89q.jnbt.StringTag;
 import com.sk89q.jnbt.Tag;
+import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.Vector;
 import com.sk89q.worldedit.Vector2D;
 import com.sk89q.worldedit.WorldEditException;
@@ -104,6 +105,9 @@ public class FastWorldEditExtent extends AbstractDelegateExtent implements HasFa
 
     @Override
     public BaseBlock getLazyBlock(int x, int y, int z) {
+        if (y > maxY || y < 0) {
+            return EditSession.nullBlock;
+        }
         int combinedId4Data = queue.getCombinedId4Data(x, y, z, 0);
         int id = FaweCache.getId(combinedId4Data);
         if (!FaweCache.hasNBT(id)) {